These Cheesy Meatball Subs are the ultimate comfort food, filled with tender homemade meatballs, rich marinara, and gooey melted cheese, all nestled in a toasted hoagie roll. Easy enough for weeknight dinners and impressive enough for game day or gatherings, this Italian-American favorite is hearty, satisfying, and completely customizable.Whether you're feeding your family or hosting a crowd, these subs will hit the spot every time.